providing technical and financial assistance to Indian tribes and Alaska Native communities (tribes) to promote a healthy environment through the cooperative development and continuing operation of safe water, wastewater, and solid waste systems and related support facilities; and

assisting each American Indian tribe and Alaska Native community to achieve its unique goals for obtaining health care facilities and establishing and maintaining a healthy environment.

The OEHE is composed of five divisions that provide support for IHS Headquarters, each of the 12 IHS Areas, all IHS service units and many tribal programs in the following areas: